Abdullah Gohar, a researcher at El Mansoura university, works on renovating the 43 million-year-old fossil of a previously unknown amphibious four-legged whale species called "Phiomicetus anubis" that helps trace the transition of whales from land to sea, discovered in the Fayum Depression in the Western Desert, near the town of El Mansoura, north of Cairo, Egypt, August 26, 2021. REUTERS/Mohamed Abd El Ghany